FILE - Iranian worshippers chant slogans during an anti-Israeli gathering after Friday prayers in Tehran, Iran, April 19, 2024. President Joe Biden can breathe a little bit easier with Israel and Iran seemingly stepping back from the brink of plunging the Middle East into all-out war. But challenges across the Middle East are testing the proposition he made to voters during his 2020 campaign: A Biden White House would bring a measure of calm around the globe and renewed respect on the world stage. (AP Photo/Vahid Salemi, File)